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Did you know?

The average adult has about 21 square feet of skin.

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In 1864, the first barbiturate (barbituric acid) was synthesized.

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The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."

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All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

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Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.

Pyruvate oxidation results in three changes to pyruvate: Pyruvate oxidation results in three changes to pyruvate:
Monitoring and Following Up on Laboratory Test Results Monitoring and Following Up on Laboratory Test Results
Cyanosis as shown here at the patient’s fingertips results from a lack of oxygen in the tissues Cyanosis as shown here at the patient’s fingertips results from a lack of oxygen in the tissues
F1 and F2 results of Mendel’s dihybrid crosses F1 and F2 results of Mendel’s dihybrid crosses
The expected results of two generations of semiconservative replication The expected results of two generations of semiconservative replication
Test-Cross Results from Mendel’s Experiments Test-Cross Results from Mendel’s Experiments
Video: Cortisol (protein catabolism, gluconeogenesis, vasoconstriction & anti-inflammation)

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